CN216258561U

CN216258561U - Bidirectional self-closed liquid-stopping and anti-back-transfusion device

Info

Publication number: CN216258561U
Application number: CN202122732121.3U
Authority: CN
Inventors: 雷冰; 陈浩; 雷应雄; 刘涛
Original assignee: Sichuan Prius Biotechnology Co ltd
Current assignee: Sichuan Prius Biotechnology Co ltd
Priority date: 2021-11-09
Filing date: 2021-11-09
Publication date: 2022-04-12
Anticipated expiration: 2031-11-09

Abstract

The utility model discloses a bidirectional self-closed liquid-stopping and anti-return infusion device, relates to the field of medical instruments, and is mainly used for solving the problem that air is injected into a patient body after medicine in an infusion tube is completely drained. Its main structure includes: a floating cup is arranged in the dropping funnel, one end of the floating cup close to the valve port is sunken, and a liquid stopping sheet is arranged on the sunken surface. The bidirectional self-closed liquid-stopping and anti-return infusion device provided by the utility model can be tightly attached to a valve port, has a good sealing effect, and prevents air from entering a human body.

Description

Bidirectional self-closed liquid-stopping and anti-back-transfusion device

Technical Field

The utility model relates to the field of medical instruments, in particular to a bidirectional self-closed liquid-stopping and anti-return infusion device.

Background

The transfusion system mainly used carries the liquid medicine for the patient, liquid medicine drips into in the medicine bottle in the dropping funnel, when using, liquid medicine in the medicine bottle is carried and is accomplished, need change the liquid medicine, must be timely, liquid that will store in the dropping funnel is dripped and is changed new liquid medicine before finishing, let new liquid medicine enter into the dropping funnel, otherwise can get into the air in the dropping funnel, thereby form the bubble, the bubble can be along with the flow of liquid get into under smoothly in the infusion pipe, the bubble can get into the human body through the syringe needle pinhole like this, if the air that gets into the human body is more, can not dissolve rapidly in blood along with metabolism discharge, will form the air cock, can threaten patient's physical and mental health and even life safety when serious.

In order to avoid the above situation, in actual use, medical staff, patients and accompanying staff all pay high attention to the progress of infusion, and even then, the error condition is still many.

In addition, another dangerous condition may occur clinically: at ordinary times, the height of the injection part of the patient needs to be lower than that of the dropping funnel, liquid medicine in the dropping funnel smoothly enters the body of the patient under the action of pressure difference, and once the height relation between the liquid medicine and the dropping funnel is reversed, when the dropping funnel is lowered (for example, falls), blood in the body of the patient can enter the dropping funnel along the lower infusion catheter due to the pressure.

Chinese patent No. CN105484388A discloses a disposable bidirectional self-sealing type liquid-stopping and back-infusion-preventing device, which comprises an upper infusion tube, a dropping funnel and a lower infusion tube, and is characterized in that the lower part of the dropping funnel is a valve port, a retaining ring and a floating cup are arranged in the dropping funnel, a lower liquid-stopping sheet is arranged on the floating cup, the lower liquid-stopping sheet is matched with the valve port to realize sealing, the retaining ring on the floating cup is matched with the retaining ring to realize limiting, and an upper liquid-stopping sheet is arranged on the retaining ring. The lower liquid stopping sheet arranged on the floating cup is mainly used for plugging the valve port at the lower part of the dropping funnel, so that the sealing of the infusion path is realized, the joint degree of the lower liquid stopping sheet and the valve port directly influences the sealing effect of the infusion path, and if the sealing is not tight, air still enters a human body to cause adverse consequences.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a bidirectional self-sealing liquid-stopping and anti-return infusion device, which solves the problem that a traditional self-sealing liquid-stopping and anti-return infusion device is not tightly sealed due to the fact that a lower liquid-stopping sheet is not highly attached to a valve port, and infusion safety is guaranteed.

The technical scheme used for realizing the purpose of the utility model is as follows: a floating cup is arranged in the dropping funnel (1), and a liquid stopping sheet is arranged at the bottom of the floating cup. Compared with a bonding mode, the liquid stopping sheet is integrally formed, no adhesive is used, the liquid stopping sheet is clamped to enable the plane of the liquid stopping sheet to be more flat, and the liquid stopping sheet can be better attached to a valve port; and the installation is convenient, the assembly efficiency of workers can be accelerated, and the yield is improved.

Furthermore, the clamping groove is formed along the edge of the bottom surface of the floating cup in a circle. The circumferential circle is blocked, the stability is good, and the falling is not easy.

Furthermore, the bottom of the clamping groove is larger than the notch. The liquid stopping sheet is matched with the clamping groove in shape and size, the liquid stopping sheet is elastic, the end expansion part deforms and is plugged into the groove opening, the shape of the groove bottom is recovered, and the liquid stopping sheet can be clamped and is convenient to install.

Furthermore, the joint of the clamping groove and the liquid stopping sheet is vertical to the liquid stopping surface of the liquid stopping sheet. The installation is convenient.

Furthermore, the bottom of the floating cup at the liquid stopping sheet is sunken, and a cavity is formed between the liquid stopping sheet and the floating cup. The liquid stop sheet and the sunken part of the valve body form a closed cavity, the liquid stop sheet has elasticity, the cavity provides a deformation space for the liquid stop sheet, when the valve port needs to be plugged, the liquid stop sheet is contacted with the valve port to generate deformation, the liquid stop sheet is sunken towards the cavity, and the sunken part is tightly attached to the valve port.

Furthermore, the top of the floating cup is convex in a hemispherical shape. The liquid medicine can not splash when dropping from the liquid opening, and can smoothly slide into the dropping funnel along the hemisphere.

Furthermore, a flange is arranged on the floating cup, a check ring is arranged on the inner wall of the dropping funnel, and the inner diameter of the check ring is larger than the diameter of the bulge of the floating cup and smaller than the diameter of the flange. The floating cup is lower in density than the liquid medicine and floats upwards in the liquid medicine, if the floating cup is not restrained, the floating cup can float to the top end and is sealed at the liquid inlet, so that the dropping funnel can not feed liquid normally, in order to avoid the situation, the inner wall of the dropping funnel is provided with the retaining ring, the floating cup is provided with the flanging, and when the floating cup floats to a certain degree, the retaining ring can block the flanging, so that the floating cup can not rise continuously.

Furthermore, the top of the floating cup is higher than the height of the retainer ring. The floating cup can not be clamped by the retainer ring in the process of floating upwards, and can smoothly float upwards.

Furthermore, the raised part of the upper part of the flanging of the floating cup is more than half of the height of the whole floating cup. The raised part moves in the retainer ring, and plays a role of guiding under the cooperation of the retainer ring, so that the floating cup is prevented from generating larger swing or deviation, the central line of the floating cup can be better superposed with the central line of the dropping funnel, and the frictional resistance is reduced.

Furthermore, the floating cup comprises an upper floating cup and a lower floating cup which are coaxially connected, and a groove is formed in the lower portion of the upper floating cup. The lower part of the floating cup is provided with the groove, so that the buoyancy force bearing area of the floating cup is increased, however, if the floating cup and the lower floating cup are integrated, the processing difficulty is increased, the floating cup and the lower floating cup can be processed separately in a split mode, and the floating cup and the lower floating cup are assembled after being processed and coaxially connected at the centers of rotation of the floating cup and the lower floating cup.

The utility model has the positive effects that: during normal infusion, the float cup in the dropping funnel can receive buoyancy, floats in the liquid in the dropping funnel, can not have any influence to the infusion process, and after liquid is defeated, the float cup can descend along with the page decline of the liquid in the dropping funnel, and the last liquid stopping piece of its lower extreme can realize sealing with the valve port cooperation, prevents that the air from getting into to cause medical accident. More importantly, when the dropping funnel is put down, the upper liquid stop sheet can be matched with the retainer ring to realize reverse sealing.

The utility model has the beneficial effects that:

the end surface of the bottom of the floating cup is sunken, the sunken surface is provided with the liquid stopping sheet, the liquid stopping sheet is in contact with the valve port and deforms, the liquid stopping sheet is sunken towards the cavity, and the sunken part is tightly attached to the valve port, so that the valve port can be better sealed, and air is prevented from entering the valve port;

the floating cup and the liquid stopping sheet are clamped, so that the contact surface is smooth and convenient to install, the working efficiency of workers is improved, and the yield is improved.

Drawings

FIG. 1: the utility model has a structure schematic diagram.

FIG. 2: the structure of the floating cup is shown schematically.

Reference numbers and corresponding part names in the drawings:

1-dropping funnel, 2-floating cup, 3-retainer ring, 4-floating cup, 5-lower floating cup, 6-liquid stopping sheet, 7-valve port.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1 and fig. 2, the bidirectional self-enclosed liquid-stopping and anti-back-flow infusion apparatus provided by the utility model comprises a dropping funnel 1, wherein two ends of the dropping funnel 1 are connected with infusion catheters, and the liquid inlet end of the bottom infusion catheter is a valve port 7; a floating cup 2 is arranged in the dropping funnel 1, the end face of the bottom of the floating cup 2 is sunken, and a liquid stopping sheet 6 is arranged at the sunken position. The liquid stop sheet 6 and the sunken part of the valve body 2 form a closed cavity, the liquid stop sheet has elasticity, the cavity provides a space for the deformation of the liquid stop sheet, when the valve port needs to be plugged, the liquid stop sheet 6 is contacted with the valve port 7 to generate deformation, the cavity is sunken, and the sunken part is tightly attached to the valve port 7. The floating cup 2 is provided with a clamping groove, the bottom of the clamping groove is larger than the notch, the liquid stopping sheet 6 is provided with a joint matched with the clamping groove, and the clamping groove and the joint on the liquid stopping sheet 6 are vertical to the liquid stopping surface of the liquid stopping sheet 6. The liquid stopping sheet 6 has elasticity, the expanded part of the end part is deformed and plugged into the notch, the shape of the notch is recovered at the bottom of the notch, and the liquid stopping sheet 6 is clamped with the floating cup 2. The top of the floating cup 2 is raised into a hemispherical shape, so that the dripping liquid medicine is prevented from splashing; the floating cup 2 is provided with a flange, the raised part on the upper part of the flange is more than half of the height of the whole floating cup 2, the inner wall of the dropping funnel is provided with a retaining ring 3, the size of the retaining ring 3 can allow the raised part of the floating cup 2 to pass through, and the retaining ring 3 plays a role of guiding under the matching of the retaining ring 3, so that the floating cup 2 is prevented from generating larger swing or offset; the turn-ups diameter is greater than retaining ring 3 internal diameter, can't pass through retaining ring 3, has restricted the height that floats of superficial cup 2, prevents to float cup 2 to the top, seals the liquid inlet.

When in use, the liquid medicine enters the dropping funnel 1 from the liquid inlet, and is conveyed into the body of a patient through the pipeline of the dropping funnel 1 communicated with the valve port. The floating cup 2 is immersed in the liquid medicine, and the floating cup 2 floats under the buoyancy action of the liquid medicine, so that a normal infusion channel is not obstructed; when the liquid medicine is completely infused, the needle head cannot be pulled out or the liquid medicine cannot be replaced in time, the liquid level of the liquid medicine falls back, the position of the floating cup is reduced along with the reduction of the liquid level, the liquid stopping sheet 6 is closer and closer to the valve port 7, finally, the liquid stopping sheet 6 seals the valve port 7 before the liquid flows out, no matter the liquid or the air can not enter the lower infusion catheter, and the risk of air input for a patient can be avoided.

When the transfusion device is in an accident situation, such as falling or being placed improperly, the height of the dropping funnel 1 is lower than the body height of a patient, and at this time, the flow direction of the liquid in the dropping funnel 1 is reversed: flows from the lower end to the upper end of the dropping funnel 1. Based on the same reason, float cup 2 can the rebound, and the turn-ups that floats on the cup 2 can draw close to retaining ring 3, until the contact, just so realized reverse closure, stopped the production of blood return phenomenon.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a two-way self-sealing formula ends liquid and prevents feedback ware, is provided with in dropping funnel (1) and floats cup (2), floats cup (2) bottom and is equipped with and ends the liquid piece, its characterized in that floats cup (2) bottom terminal surface and sets up the draw-in groove, ends and is provided with the joint with draw-in groove looks adaptation on liquid piece (6), ends liquid piece (6) through joint, draw-in groove and floats cup (2) joint.

2. The two-way self-sealing type liquid-stop and anti-return infusion device as claimed in claim 1, wherein the clamping groove is formed along the edge of the bottom surface of the float cup (2).

3. The bi-directional self-sealing liquid-stop anti-return infusion set according to claim 2, wherein the bottom of the groove is larger than the notch.

4. The two-way self-sealing type liquid-stopping and back-flow-preventing device as claimed in claim 3, wherein the joint on the clamping groove and the liquid-stopping sheet (6) is perpendicular to the liquid-stopping surface of the liquid-stopping sheet (6).

5. The bi-directional self-sealing type liquid-stopping and anti-back transfusion device as claimed in claim 1, wherein the bottom of the floating cup at the liquid-stopping sheet is recessed, and a cavity is formed between the liquid-stopping sheet and the floating cup.

6. A two-way self-sealing type liquid-stopping and anti-back-transfusion device as claimed in any one of claims 1 to 3, wherein the top of the floating cup (2) is convex and hemispherical.

7. The two-way self-sealing type liquid-stopping and anti-return infusion device as claimed in claim 4, wherein the floating cup (2) is provided with a flange, the inner wall of the dropping funnel (1) is provided with a retainer ring (3), and the inner diameter of the retainer ring is larger than the diameter of the bulge of the floating cup and smaller than the diameter of the flange.

8. The two-way self-sealing type liquid-stop and anti-return infusion device as claimed in claim 5, wherein the top of the floating cup (2) is higher than the height of the retainer ring (3).

9. The two-way self-sealing type liquid-stopping and anti-back transfusion device as claimed in claim 6, wherein the raised part of the upper part of the flange of the floating cup (2) is more than half of the height of the whole floating cup (2).

10. The two-way self-sealing type liquid-stopping and anti-back transfusion device according to claim 6, wherein the floating cup (2) comprises an upper floating cup (4) and a lower floating cup (5) which are coaxially connected, and a groove is formed at the lower part of the upper floating cup (4).